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String sqlcon = "***";//ÕâÀïÊÇÒ»¸ö×Ö·û´®£¬¾ßÌå¸úÊý¾Ý¿âµÄÑéÖ¤·½Ê½Óйء£
//sql server Éí·ÝÑéÖ¤ Á¬½Ó×Ö·û´®
private string ConnstrSqlServer = "server=·þÎñÆ÷Ãû³Æ;uid=µÇ¼Ãû³Æ;pwd=µÇ¼ÃÜÂë;database=Êý¾Ý¿âÃû³Æ";
//windows Éí·ÝÑéÖ¤Á¬½Ó×Ö·û´®
private string ConnstrWindows = "server=·þÎñÆ÷Ãû³Æ;database=Êý¾Ý¿âÃû³Æ;Trusted_Connection=SSPI";
SqlConnection connection = new SqlConnection(sqlcon);
ÀýÈ磺
SqlConnection connection = new SqlConnection("server=(local);database=dotNET_lab;Trusted_Connection=SSPI");
//windowsÑéÖ¤·½Ê½ ¡£
SqlConnection connection = new SqlConnection("server=(local);uid=sa;password=sa;database=dotNET_lab");
//»ìºÏÑéÖ¤·½Ê½ ¡£
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try {
connection.Open();
SqlCommand command = new SqlCommand("select count(*) from admin where username='"+username+"' and password='"+password+"'",connection);
SqlDataReader reader = command.ExecuteReader();
while(reader.Read())
{
n = reader.GetInt32(0);//nÊÇÔÚ֮ǰ¶¨ÒåµÄ£¬Èç¹ûn>0£¬ÏÔÈ»¾Í´æÔÚÕâÑùÒ»¸öÓû§¡£
}
//Console.WriteLine(reader.GetString(1));
}
catch(SqlException ex) {
&n
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